Transistor as Amplifier

Questions:

1. Maximum resistance makes the sensor less sensitive. Minimum resistance makes the sensor more sensitive.

Transistor as Switch

Questions:

1. Because it is connected to a 10k Ohm resister instead of a 560 Ohm Resistor.
2. 1st Led = .005 I, 2nd Led = .0089I.

Temperature Sensor and LED Circuit with Arduino

Force-sensitive Resistor and LED with Arduino

Questions:

1. This sensor could definitely improve accessibility for handicapped people in a number of ways. Two examples would be: A. Using the sensor to activate an automatic door for someone in a wheelchair. Using the sensor to communicate for someone who has lost a lot of movement and can only move their hands.

Photoresistor and Speaker Circuit

Whoops! I lost my photoresister! Will update when I find a replacement.

Potentiometer and Speaker Circuit

Questions:

1. No, the speaker drops whatever voltage you put into it.

2. To make it louder, simply up the voltage!

3. Yes! But I wish the speaker didn't sound so horrible!

Potentiometer and LED Circuit

Questions:

1. 1023
2. 0
3. It must drop 2.5 V
4. It is outside of the LED's range of output